derek.holloway
7502bf64a4
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70 lines
2.7 KiB
YAML
70 lines
2.7 KiB
YAML
# RUN: llc -mtriple=amdgcn-amd-amdhsa -verify-machineinstrs -run-pass=twoaddressinstruction -o - %s | FileCheck -check-prefix=CHECK %s
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# RUN: llc -mtriple=amdgcn-amd-amdhsa -verify-machineinstrs -run-pass=liveintervals,twoaddressinstruction -o - %s | FileCheck -check-prefix=LIS %s
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# Checks that while lowering REG_SEQUENCE, undef COPY are not skipped if there is no LIS
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# information
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---
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name: regsequence-undef-subreg-use
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noPhis: true
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body: |
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bb.0:
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; CHECK-LABEL: name: regsequence-undef-subreg-use
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; CHECK: [[COPY:%[0-9]+]]:sgpr_32 = S_MOV_B32 0, implicit $exec
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; CHECK-NEXT: undef [[DEF:%[0-9]+]].sub0:sreg_64 = COPY [[COPY]]
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; CHECK-NEXT: [[DEF:%[0-9]+]].sub1:sreg_64 = COPY undef [[UND:%[0-9]+]]:sgpr_32
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; CHECK-NEXT: [[OTH:%[0-9]+]]:vgpr_32 = V_MOV_B32_e32 [[DEF]].sub1
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; LIS-LABEL: name: regsequence-undef-subreg-use
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; LIS: [[COPY:%[0-9]+]]:sgpr_32 = S_MOV_B32 0, implicit $exec
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; LIS-NEXT: undef [[DEF:%[0-9]+]].sub0:sreg_64 = COPY [[COPY]]
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; LIS-NEXT: [[OTH:%[0-9]+]]:vgpr_32 = V_MOV_B32_e32 undef [[DEF]].sub1
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%0:sgpr_32 = S_MOV_B32 0, implicit $exec
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%1:sreg_64 = REG_SEQUENCE %0, %subreg.sub0, undef %2:sgpr_32, %subreg.sub1
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%3:vgpr_32 = V_MOV_B32_e32 %1.sub1, implicit $exec
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...
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---
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name: regsequence-undef-subreg-without-use
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noPhis: true
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body: |
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bb.0:
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; CHECK-LABEL: name: regsequence-undef-subreg-without-use
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; CHECK: [[COPY:%[0-9]+]]:sgpr_32 = S_MOV_B32 0, implicit $exec
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; CHECK-NEXT: undef [[DEF:%[0-9]+]].sub0:sreg_64 = COPY [[COPY]]
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; LIS-LABEL: name: regsequence-undef-subreg-without-use
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; LIS: [[COPY:%[0-9]+]]:sgpr_32 = S_MOV_B32 0, implicit $exec
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; LIS-NEXT: undef [[DEF:%[0-9]+]].sub0:sreg_64 = COPY [[COPY]]
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%0:sgpr_32 = S_MOV_B32 0, implicit $exec
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%1:sreg_64 = REG_SEQUENCE %0, %subreg.sub0, undef %2:sgpr_32, %subreg.sub1
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...
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---
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name: regsequence-undef-subreg-full-reg-use
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noPhis: true
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body: |
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bb.0:
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; CHECK-LABEL: name: regsequence-undef-subreg-full-reg-use
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; CHECK: [[COPY:%[0-9]+]]:sgpr_32 = S_MOV_B32 0, implicit $exec
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; CHECK-NEXT: undef [[DEF:%[0-9]+]].sub0:sreg_64 = COPY [[COPY]]
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; CHECK-NEXT: [[OTH:%[0-9]+]]:vreg_64 = COPY [[DEF]], implicit $exec
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; LIS-LABEL: name: regsequence-undef-subreg-full-reg-use
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; LIS: [[COPY:%[0-9]+]]:sgpr_32 = S_MOV_B32 0, implicit $exec
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; LIS-NEXT: undef [[DEF:%[0-9]+]].sub0:sreg_64 = COPY [[COPY]]
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; LIS-NEXT: [[OTH:%[0-9]+]]:vreg_64 = COPY [[DEF]], implicit $exec
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%0:sgpr_32 = S_MOV_B32 0, implicit $exec
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%1:sreg_64 = REG_SEQUENCE %0, %subreg.sub0, undef %2:sgpr_32, %subreg.sub1
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%3:vreg_64 = COPY %1, implicit $exec
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...
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